package com.springbootweb.common;
import java.util.UUID;
public class UuidUtil {
    // 生成UUID
    public static String getstring(){
        return UUID.randomUUID().toString().replaceAll("-", "");
    }

    //生成16位唯一性的订单号
    public static String getint(){
        //随机生成一位整数
        int random = (int) (Math.random()*9+1);
        String valueOf = String.valueOf(random);
        //生成uuid的hashCode值
        int hashCode = UUID.randomUUID().toString().hashCode();
        //可能为负数
        if(hashCode<0){
            hashCode = -hashCode;
        }
        String value = valueOf + String.format("%015d", hashCode);
       return value;
    }

}
